We discuss the estimation of the interferometric visibility (fringe contrast) for the Exozodi survey conducted at the CHARA array with the JouFLU beam combiner. We investigate the use of the statistical median to estimate the uncalibrated visibility from an ensemble of fringe exposures. Under a broad range of operating conditions, numerical simulations indicate that this estimator has a smaller...

Melatonin was found in the fresh water characeae Chara australis. The concentrations (~4 μg/g of tissue) were similar in photosynthesizing cells, independent of their position on the plant and rhizoids (roots) without chloroplasts. Exogenous melatonin, added at 10 μM to the artificial pond water, increased quantum yield of photochemistry of photosystem II by 34%. The increased efficiency appear...

In this contribution, new data concerning bryophytes, fungi and lichens of the Italian flora are presented. It includes records confirmations for algal genus Chara , bryophyte genera Bryum Grimmia Cephaloziella Hypnum Nogopterium Physcomitrium Polytrichastrum Rhynchostegiella Saelania Schistostega fungal Cortinarius Lentinellus Omphalina Xerophorus lichen Acarospora Agonimia Candelariella Clado...

This paper presents new records and noteworthy data on the following taxa in SE Europe adjacent regions: red algae Lemanea rigida Paralemanea torulosa, mycorrhizal fungi Amanita simulans Terfezia pseudoleptoderma, parasitic fungus Microbotryum vinosum, saprotrophic Sarcoscypha jurana, stonewort Chara tenuispina, mosses Brachytheciastrum collinum Meesia longiseta, monocots Dactylorhiza romana Ne...

A new species, Chara lipkinii, was described based on specimens from the Mediterranean, Israel. Dioecy, 10-13 branchlets in a whorl, complete tylacanthous to isostichous displostichous axial cortex with very short solitary spine cells, hardly visible diplostephanous bistipulate obtuse stipulodes, frequently appearing as haplostephanous, combination completely ecorticate without initials and 1-3...